Qt/QT_Assistant/Assistant/weather/weather.cpp

#include "weather.h"
#include <QNetworkAccessManager>
#include <QNetworkRequest>
#include <QNetworkReply>
#include <QHttpPart>
#include <QHttpMultiPart>
#include <QJsonDocument>
#include <QJsonObject>
#include <QJsonArray>
#include <QDebug>
#include <QString>

static const QMap<QString, QString> weatherMap {
    {"NA", "55"},
    {"晴", "0"},
    {"多云", "1"},
    {"阴", "2"},
    {"阵雨", "3"},
    {"雷阵雨", "4"},
    {"小雨", "7"},
    {"中雨", "8"},
    {"大雨", "9"},
    {"中到大雨", "9"},
    {"雪", "13"},
};
static const QMap<QString, QString> weatherMap_night {
    {"NA", "55"},
    {"晴", "33"},
    {"多云", "41"},
    {"阴", "35"},
    {"阵雨", "47"},
    {"雷阵雨", "49"},
    {"小雨", "7"},
    {"中雨", "8"},
    {"大雨", "9"},
    {"中到大雨", "9"},
    {"雪", "13"},
};
weather::weather(Ui::climate * p)
    : exUI(p)
{
    manager = new QNetworkAccessManager(this);  //新建QNetworkAccessManager对象
    /*manager具有异步API，当http请求完成后，会通过finished信号进行通知,
     * 接收和发送网络请求都会返回QNetworkReply*/
    connect(manager,SIGNAL(finished(QNetworkReply*)),this,SLOT(replyFinished(QNetworkReply*)));

}
weather::~weather()
{
   delete exUI;
}
void weather::getWeather()
{
     delete manager;
}
void weather::http_sent()
{
    QUrl url;
    QString local_city = "101280301";
    QNetworkRequest quest;
    char quest_array[256]="http://t.weather.sojson.com/api/weather/city/";
    sprintf(quest_array,"%s%s",quest_array,local_city.toUtf8().data());
    quest.setUrl(QUrl(quest_array));
    /*发送get网络请求*/
    manager->get(quest);
}
void weather::replyFinished(QNetworkReply *reply)
{
    qDebug()<<"The message has been received";
    QString all = reply->readAll();//接收的的全部信息
    QJsonParseError err;
    QJsonDocument json_recv = QJsonDocument::fromJson(all.toUtf8(),&err);
    if(!json_recv.isNull())
    {
        QJsonObject object = json_recv.object();
        /*获取更新时间*/
        QString SUT = object.value("cityInfo").toObject().value("updateTime").toString();
        qDebug()<<"updata:\n"<< SUT;
        /*获取温度*/
        QJsonObject JO_data = json_recv.object().value("data").toObject();
        QString wendu = JO_data.value("wendu").toString() + "°C";

       // qDebug()<<"temp:\n"<< wendu;
        /*获取湿度*/
        QString shidu = JO_data.value("shidu").toString();
        /*获取空气质量*/
        QString quality = JO_data.value("quality").toString();
        //qDebug()<<"quality:\n"<< quality;
        /*获取天气预报*/
        QJsonArray JA_forecast = JO_data.value("forecast").toArray();
        for (int i=0; i<5; i++)
        {
            /*获取星期*/
            QString week =JA_forecast[i].toObject().value("week").toString();
            /*获取最大温度*/
            QString high_temp =JA_forecast[i].toObject().value("high").toString();
            /*获取最大温度*/
            QString low_temp =JA_forecast[i].toObject().value("low").toString();
            /*获取天气状态，多云*/
            QString wtype = JA_forecast[i].toObject().value("type").toString();
            /*获取风向*/
            QString wind =JA_forecast[i].toObject().value("fx").toString();
            /*获取注意事项*/
            QString notice =JA_forecast[i].toObject().value("notice").toString();
            QStringList list = SUT.split(":");//QString字符串分割函数
                /*构造图标的路径*/
            QString icon_path = ":/weather/image/" + weatherMap_night[wtype] + ".png";
            /*晚上7点到早上六点换不同的图片*/
            if((list[0].toInt()>19)||(list[0].toInt()>6))
            {
                 QString icon_path = ":/weather/image/" + weatherMap[wtype] + ".png";
            }

            if(i==0)
            {
                 exUI->temp_now->setText(wendu);
                 exUI->label_3->setText(wtype + "  "+ high_temp + "/" +low_temp);
                 exUI->label_5->setText(wtype);
                 exUI->label_7->setText(high_temp + "/" +low_temp);
                 exUI->label_8->setText(wind);
                 QPixmap pixmap(icon_path);
                 exUI->label->setPixmap(pixmap.scaled(180,180));
                 exUI->label_6->setPixmap(pixmap.scaled(50,50));
                 exUI->notice->setAlignment(Qt::AlignCenter);
                 exUI->notice->setText(notice);
            }
            if(i==1)
            {
                 exUI->label_30->setText(week);
                 exUI->label_29->setText(wtype);
                 exUI->label_32->setText(high_temp + "/" +low_temp);
                 exUI->label_33->setText(wind);
                 QPixmap pixmap(icon_path);
                 exUI->label_31->setPixmap(pixmap.scaled(50,50));
            }
            if(i==2)
            {
                 exUI->label_35->setText(week);
                 exUI->label_34->setText(wtype);
                 exUI->label_37->setText(high_temp + "/" +low_temp);
                 exUI->label_38->setText(wind);
                 QPixmap pixmap(icon_path);
                 exUI->label_36->setPixmap(pixmap.scaled(50,50));
            }
            if(i==3)
            {
                 exUI->label_40->setText(week);
                 exUI->label_39->setText(wtype);
                 exUI->label_42->setText(high_temp + "/" +low_temp);
                 exUI->label_43->setText(wind);
                 QPixmap pixmap(icon_path);
                 exUI->label_41->setPixmap(pixmap.scaled(50,50));
            }
            if(i==4)
            {
                 exUI->label_45->setText(week);
                 exUI->label_44->setText(wtype);
                 exUI->label_47->setText(high_temp + "/" +low_temp);
                 exUI->label_48->setText(wind);
                 QPixmap pixmap(icon_path);
                 exUI->label_46->setPixmap(pixmap.scaled(50,50));
            }

        }
    }
    else
    {
        qDebug()<<"json_recv is NULL or is not a object !!";
    }
    reply->deleteLater();
}